Whats wrong with my Carbs?, wants to stall leaving the traffic light. |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Whats wrong with my Carbs?, wants to stall leaving the traffic light. |
HansJan |
Mar 25 2017, 09:12 PM
Post
#1
|
Member Group: Members Posts: 394 Joined: 5-April 16 From: Sugar Land TX Member No.: 19,860 Region Association: Southwest Region |
Hello,
Not having much luck with the Search function. The car: 1972, with 103mm cylinders (2.3l), aftermarket cam and larger valves with double springs. Fuel supply: Dual EMPI HPMX 44 Carburetors, Jets: .55 Idle, 1.55 main, Air 1.75. History: After car-fire engine was out, heads taken off and some studs and springs replaced. Changed to quieter exhaust. Had trouble with dialing in the carburetors and changed the jets to the recommendations from EMPI (see above). It runs a lot better now. Remaining complaint; The car runs pretty good (especially above 2,800) RPM. However; It takes me a while to leave after each stop (stop signs traffic lights etc) because the car want to stall. When I push the accelerator to quickly the RPM dips down, and car will die. Only when I ease on the paddle very gently, it will increase in RPM, and I can lift clutch at above 1,500 RPM. Anyone here understands this issue? |
HansJan |
Mar 26 2017, 11:03 AM
Post
#2
|
Member Group: Members Posts: 394 Joined: 5-April 16 From: Sugar Land TX Member No.: 19,860 Region Association: Southwest Region |
Wow guys that is quite a response. Most of which I do not yet completely understand. I will look into all of your suggestions and let you know.
Exulant: Not sure what the timing is. Some lousy shop tried to dial in my car; $3,800 and twelve weeks later I picked it back up and start tinkering myself. Spoke:: Not sure what acceleration jet is. Carbs come standard with 0.50 Acceleration pump (but honestly; I don't even know what I just said). T-rowle: Will smaller venturis make the car slower? Keith914: your engine is really only 1.365 liter? Not sure yet if my carbs have a "dormant" choke piston (will investigate). PotterPorsche: Lm2 wideband, this is getting really technical. Give me some time to figure out if I understand how to use one of those. Thanks y'all. You have given me plenty of things to look at. Br, |
Lo-Fi Version | Time is now: 18th April 2024 - 11:53 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |